I had the same problem at my Hair salon. But they changed the chairs in the waiting area. a year ago . I bet I would fit now if they hadn't.
I took a flop on some snow and ice recently and bruised up my hip pretty good, a downright bone bruise. Wouldn't have even noticed it when I weighed 85lbs. more.LOL! So that is one downside to downsizing... Fitting in any chair is great . Congrats. to you and your efforts!